From 8a77d280bdc2ffd578c7e8a76305c7bd025afece Mon Sep 17 00:00:00 2001
From: harupy <hkawamura0130@gmail.com>
Date: Wed, 2 Aug 2023 16:44:21 +0900
Subject: [PATCH] Fix arg_auto

---
 crates/ruff/src/rules/pyupgrade/rules/f_strings.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crates/ruff/src/rules/pyupgrade/rules/f_strings.rs b/crates/ruff/src/rules/pyupgrade/rules/f_strings.rs
index 462b3c5f81f890..b40a330373d827 100644
--- a/crates/ruff/src/rules/pyupgrade/rules/f_strings.rs
+++ b/crates/ruff/src/rules/pyupgrade/rules/f_strings.rs
@@ -104,8 +104,9 @@ impl<'a> FormatSummaryValues<'a> {
     }
 
     fn arg_auto(&mut self) -> Option<&Expr> {
+        let arg = self.arg_positional(self.auto_index);
         self.auto_index += 1;
-        self.arg_positional(self.auto_index - 1)
+        arg
     }
 
     fn arg_positional(&mut self, index: usize) -> Option<&Expr> {